Dynamic SEMIFLEX® - U.S. Patent # 3,490,496

• Dynamic vacuum insulation eliminates deterioration
• Lowest cool down and steady state heat loss of all liquid nitrogen piping systems
• SEMIFLEX® is piped directly to each use point for on demand supply
• Constructed of two concentric corrugated copper tubes, separated by a Teflon® spacer and covered in plastic to protect against abrasion
• Frost, moisture and ice ball problems commonly associated with foam insulated or soft vacuum lines are elimanted
• Dynamic SEMIFLEX® can be combined with COBRAFLEX® to provide efficient connections to use points